Prove that the set x = [1, 2]u[3, 4] cr is not convex.
2.4 functions 41 (c) the intersection of two closed sets is closed (d) the cortacion product of two closed sets is closed (e) the intersection of two convex sets is convex (1) (from definitions 2.15, 2.16, and 2.17) a closed set contains its boundary points (g) the union and intersection of two bounded sets is bounded for e = 0.1 and € = 10, describe the e-neighborhoods: (a) ) (b) ,1) (c) ,1,-1) prove that the set

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.  

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